Oa. Olukoko et al., BOUNDARY-ELEMENT ANALYSIS OF HEAT-CONDUCTION AND THERMAL-STRESSES IN CONTACT PROBLEMS USING INDEPENDENT MESHING, Computers & structures, 59(4), 1996, pp. 729-741
This paper presents a new implementation of the boundary element metho
d in contact problems involving heat conduction and thermal stresses.
This formulation, which is an extension of the elastostatic contact fo
rmulation previously published by the present authors, allows independ
ent meshing of the contact surfaces and frictional stick-slip. Three c
ontact formulations for heat conduction problems are presented; a conv
entional node-on-node approach, a length mapping procedure and a ficti
tious node approach. The latter two approaches allow independent discr
etization of the contacting surfaces. The output from the heat conduct
ion analysis is automatically fed into the elastic analysis as body fo
rces in order to compute the thermal stresses and displacements. Sever
al practical problems are presented and the results from the three app
roaches are shown to be in good agreement with each other and with oth
er available solutions.